Removable spur for treads of tractor-wheels.



C. M. STEWARD. REMOVABLE SPUR FOR TREADS OF TRACTOR WHEELS.

APPLICATJON FILED AUGJ. I916.

lUIUQ WW Patented. July 2, 1918 2 SHEETS-SHEhT I Chm Z6 5M W101i C. M. STEWARD.

REMOVABLE SPUR FOR TREADS 0F TRACTOR WHEELS.

APPLlCATiON FILED ALYGJ. 19H)- LQWfiWm Patented July ms.

2 SHEEYS-SHEET 2.

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" lBe it-hoWn-thatlhflnrxnnns llll. Srnwann, a citizen otthe llnitedfitates, and a resident of Plano,1countywot liendall, and fitate of Illinois,havei invented certain new and useful Improvements in..lRemovable Spurs for Treads oiflractorsWheels, of which the tollowing'isxaspecification,

My invention relates to spurs or ribs tor treads (attractor-wheels andmore particularlyitoaaadevice thatuis removable tor the lib purpose t adjustment, repairgand the like.

enter tllQCObjGGlQSiOlE my invention is the provision otZ-a device of this character that is constructedse" that; it may be readily and quickly applied to tractor wheels already in.

use-without materially altering either the rim ofithdWheel orthe construction of the spurs: Another object of my invention is the provision: GEE-3H plurality of removable :spurs-t'hat are adapted to be united by links andicapable .ofcabeingstored in a comparativelyismallt space when removed from the Wheel.- :Astill further object of my inventionis the provisionof a spur that is capable of ela ticity in: its connecting members and "whic rnaybe, so installed upon the wheel that the danger of the Wheel rotating independently of the spurs is eliminated. Uther objectsot myj inventionare the provisien'. of a removable spur or rib that is easily and .readily .1 constructed, economical to manutactureand edective in 1ts operation.

llprefer to; accomplish the divers objects at my invention byg;the means and in the manner hereinafter, fully described and as more particularly pointed out in the claims, reference being had to the. accompanying drawings-forming a part of t-his specification, wherein p Figure-1 isa sideelevation of a fragment ofa tractor wheelshowing my invention applied thereto. y I V Fig, 2 is a top planet thestrueture-shown in-Fig.1.

I spurs. or ribs. removed from the connecting tih spur or rib about tobe secured or mounted a I I side'ot thetread or run. of the tractor wheel links so. as-to illustrate its specific construction.

I Fig; 4: isa perspectiveview of the under portion out atractorwheel tread, showing a thereon;

cling.

are;

Fig. 5 is a side elevatirm slightly enlarged,

showing a modified construction at the lat other modified construction at the change or spur, the'same being of ih-shape cross-acction.

Fig. 8 is a view similar to Fig. 7, ot a splir or constructed or channel metal, an

Fig. 9 is an elevation of an adjustable link, or means torconnecting the chain ot.

tpecllleatlon ot'lt'cttcra Patent. Wmtgmqtgfll Jt jll mjlm v I i I hpplicatlcnflled august a, rate. eel-m m. imam. l

spurs to take up any slack or play that may be occasioned.

Referring to the drawings and more par. ticularly to Figs. 1 and .2 thereof, l have shown a tractor wheel comprising a ,plu rality of spokes 10, the cuter ends whereof are swaged or otherwise suitably securedto a felly or tire ll. llt is the usual practice in the manufacture of tractor wheels to provide either spurs, flanges or transverse ribs upon the tread ofthe wheel, so. that when the same are in operation,suficient traction will be .developedbetween the wheels and the ground upon which the vehicle is trav- These ribs are usually permanently Secured upon the rim or tread of the wheel,

and when the ,tractor is being conveyed from one location to another upona road or injure the road-bed} highway, the .ribs' orflanges mutilate and lhhayeprovided a removable set of spurs observed the same corn-prlses'a base portion that are capable of being detached or taken 12 and an'upstanding longitudinally elongated/flange 13, that entends from end to end .of the base and pro ects above the same i a distance suficient to permit the flange 13 to grip the ground. Suitable down-turned lugs 14: are provided at the ends of the base 12 and are adapted to extend down overthe lllllii lllllli slightly and prevent lateral movement of the spur or rib thereon, and studs 15 project laterally from these lugs 1% and have suitable links 16 mounted thereon, which links are retained in position by transverse cotter-pins 17. This structure provides a continuous elongated construction made up of a plurality of longitudinally disposed, substanare adapted to enter suitable holes 19, bored in the rim ofifithe tractor wheel and, if desired, one, two or more (or all) of the spurs may bo -provided with these studs. I have found, however that two, three-or four sets of spurs-aresu cient for this purpose.

In lieu of the single projecting stud 15, shown in the construction just described, the lateral flange 20- (Fig. 5) may be elongated and two pivotal projections 21 and 21 may be. provided so that the links, when secured to this spur or rib, will not engage one another, and one end'of a link may be removed without the liability of loosening the adjacent end of the opposite link, otherwise the structure illustrated in Fig. 5 is similar to that shown in Figs. 1, 2 and 3 of the drawings.

While I may conveniently employ cotterpinsinf the structure illustrated in Fig. 5, I

referably employ a wire 37, which is adapted to pass first through one lug 21, and then down'and up through the adjoining lug 21.

In this way the links 16 are easily laced into position.- v

In Fig.6 I have illustrated a rib constructed of angle-metal, of commercial form (T-shape), the web 22 whereof provides the rib, and. the transverseflanges 23 provide the body portion. The web 22 is cut away adjacent the ends and the remaining portion 24 comprises the opposite flange and is turned downwardly to provide the lateral wings that prevent the rib from slipping oi? oi the-wheel laterally. In lieu of the. links it, I have provided suitable chains 25, that are connected through holes 26 bored in the down-turned flange I have also provided bolts 27 that are tapped through the holes 28 in the flange and through corresponding aliuing holes in the rim, through. which said bolts are adapted to pass and be secured by suitable nuts.

In Fig. 7 the rib is constructed of L-shapc angle-metal, the upstanding flange 29 whereof provides the rib that is cut away adjacent its ends and has the remaining portion of this lower flange 30 bent downwardly to providca lip 31.

The structure shown in Fig. 8 comprises a U-shape or channel metal, the web 32 whereof provides the body of the structure,

and the flanges or parallel rims 33 provide the ribs. The flanges 33 are cut away adjacent their ends, similar to the manner of construction shown in Figs. 6 and 7, and the remaining portion of the web turned downwardly to provide the lip 34. In both of these last two structures the ribs are connected with each. other by chains, and bolts are tapped through their webs to secure the same against slippage.

In assembling my removable spurs I find that means must be provided to take up any slack that may be occasioned by the diiference in circumference that occurs in the tread of the wheel, and to meet this I interpose one or more adjustable links (as shown in Fig. 9) in the chain, which lmk comprises two adversely threaded studs 35 and 36 ednnected by a suitable turnbuckle 37 While. I. have illustrated and described several specific ways of carrying out my invention, it, of course, will be obvious to others skilledin the art, that divers other modifications may be made without materially departing from the spirit of my invention. I therefore desire it understood that all 'such changes arecontemplatcd as included,- within the scope of'my invention as expressed in the appended claims.

What I claim is 1. In combination with a vehicle wheel havim depressions in the tread thereof, a plura'ity of spurs adapted to extend upon the surface of the tread of said wheel, said spurs .being provided with studs adapted to enter and cooperate with the depresslons in the tread of said wheel, studs extending laterally from the ends of said spurs, and links pivotally secured to said laterally projecting studs adaptedto connect the respective spurs.

2. In combination with a vehicle wheel having depressions in the tread thereof, a plurality of spurs adapted to extend upon the surface of said tread, said spurs beln provided with studs adapted to enter sai depressions, lateral extension at the end of each spur adapted to extend over and engage the edge of the wheel tread, and links pivotally connecting said spurs.

3. In combination with a vehicle wheel having a substantially flat trend that is provided with depressions, a plurality of spurs disposed transversely on said tread and at substantially right angles to the edges thereof, studs on the under surface of said spurs adapted to enter and coiipcrate with the depressions'in said'wheel tread, the endls 0f State of Illinois, this 3rd day of August, each spur provided with inwardly project- 1916. ingflanges adapted to engage the opposite side edges of the wheel tread and elongated CHARLES STEWAHD 1'5 devices the ends whereof are pivotally 0011-. Witnesses:

' nected to said flanges. Hammer E. MIGHELL,

Signed at Plano, county of Kendall and GLENN H. DAVIES 

